diff --git a/src/Umbraco.Web.UI.Client/src/less/buttons.less b/src/Umbraco.Web.UI.Client/src/less/buttons.less
index e76ffc682c..1eaf285119 100644
--- a/src/Umbraco.Web.UI.Client/src/less/buttons.less
+++ b/src/Umbraco.Web.UI.Client/src/less/buttons.less
@@ -261,6 +261,9 @@ input[type="submit"].btn {
     *padding-top: 1px;
     *padding-bottom: 1px;
   }
+
+  // Safari defaults to 1px for input. Ref U4-7721.
+  margin: 0px;
 }